The national parks preceded the National Park Service, but the first great natural park was a state park. Californiaâs Yosemite State Park was established in 1864, by a federal cession approved by President Abraham Lincoln, and on October 21, 1880, President Rutherford B. Hayes toured Californiaâs Yosemite in an open carriage.
In fact, humans have been capturing the energy of moving water for thousands of years. Today, harnessing the power of moving water to generate electricity, known as hydroelectric power, is the largest source of emissions-free, renewable electricity in the United States and worldwide.
Electricity can be used to produce hydrogen gas from water at about 70% efficiency (33.4 divided by .7 equals 47.7), which means about 50 kilowatt hours of electricity can produce one kilogram of hydrogen gas, having the energy equivalent of one gallon of gasoline.